Mounting for spindle bearing housings

ABSTRACT

A spindle bearing housing mounted by an arrangement comprising a carrier secured to the spindle bank and depending therefrom. The carrier is provided with an upwardly facing supporting member spaced below the spindle bank, on which rests a corresponding supporting member formed on a bearing housing holder. The bearing housing is secured within the holder and extends upwardly through the recess.

United States Patent 3,684,334

Kohler 1 Aug. 15, 1972 [$4] MOUNTING FOR SPINDLE BEARING {56] ReferencesCited HOUSINGS UNITED STATES PATENTS 72 Inventor: chm Kohkr, StuttgartGermany 2,668,087 2/1954 SOUSSlOff et al ..308/ l 52 PrimaryExaminer-Martin P. Schwadron [73] Asslgnee In In w g AssistantExaminer-Frank Susko m Schweinfim' Germany Anonwy-Rrchard bow and MurraySchaffer 22 Filed: on. 16, 1910 [57] ABSTRACT A spindle bearing housingmounted by an arrange- 21 Appl. 3 ,423 ment comprising a carrier securedto the spindle bank I and depending therefrom. The carrier is providedwith I an upwardly facing supporting member spaced below F Applkafion MM the spindle bank, on which restifa corresponding sup- Oct. 23, 1969Germany..........P l9 53 325.6 portin member formed on a bearing housingholder. The bearing housing is secured within the holder and U.S. exendsthrough mg wag [51 Int. Cl. ..Fl6c /08 [58] Field Search.................308/l52; 57/l30, 9 Clnlrm, 1 Drawing Figure PAIENTEUnus 15 I972 INVENTOR. G15 BERT KOHLER MOUNTING FOR SPINDLE BEARINGl-IOUSINGS BACKGROUND OF INVENTION The present invention relates to themounting and journalling of spindle bearing housings in spinning,twisting or doubling machines.

In conventional yarn spinning or twisting machines the spindle ismounted on a spindle bearing housing supported within a recess in thespindle bank. The spindle bank of course supports a plurality of suchbearing housings. In order to provide such machines with quietly andsmoothly operating spindles, the spindle shaft has been arranged in thebearing housing in such a manner that it can perform oscillatingmovements in all directions relative to the axis of the bearing housing;and the bearing housing has been mounted both pivotally as well asradial movably in the spindle bank by means of a yieldably resilientintermediate member.

The movable mounting of the spindle shaft in the bearing housing and theflexible mounting provides the necessary conditions for an automaticadjustment of the geometrical axis of the spindle shaft particularly athigh rotary speeds, in spite of imbalance in the yarn spool, accordingto which the axis of inertia is shifted so that its effective moment ofinertia has a minimum value. In other words the degrees of freedom madepossible by the movable systems permit the spindle shaft to make tiltingmovements both around a desired pivot point as well as to shift itselfparallel to its geometric axis. By the superimposition of thesemovements, the axis of gravity of the rotary masses of the spindle isstabilized in space.

A bearing arrangement of the type described above is shown and describedin German Pat. No. 1,025,767. In the bearing arrangement of this patent,the yieldable resilient intermediary member by means of which thespindle bearing housing is supported on the spindle bank is constitutedby a relatively thin disk or by a rubber bushing. A resilient powerreservoir comprising a hollow spring member of yieldably resilientmaterial provided on the opposite side of the spindle bank coaxiallysurrounds the spindle bearing housing in a compressed manner, thustensioning the bearing housing with respect to the spindle bank.

The above known construction has been found to be disadvantageous in asmuch as it is very difficult to accurately select the dimensions andspring rates of the annular disks and the hollow springs. Furthermore,it is very difficult to pre-stress these elements to obtain the desiredradial adjustability of the spindle bearing housing in the spindle bank.An attempt has been made to overcome this defect by arranging stillanother resilient spring between the spindle bank and the spindlebearing housing. This, however, only complicates the construction andmakes the bearing arrangement very complex, although it does provide therequired movability of the spindle bearing housing in the radialdirection (i.e. in the direction wherein the bearing sleeve is otherwisenot capable of shifting in the spindle bearing housing).

It is the object of the present invention to provide a simple bearingarrangement for spindle bearing housings and spindle assemblies.

It is another object of the present invention to provide a bearingarrangement having greater freedom of movement in the radial directionthan in the axial direction.

It is another object of the present invention to provide a bearingarrangement for a spindle bearing as sembly which permits relativeradial and axial oscillation by which the quiet and smooth operation ofthe spindle can be effected.

These objects, others, and numerous advantages will be seen from thefollowing disclosure.

SUMMARY OF INVENTION According to the present invention the spindlebearing housing is mounted in an arrangement comprising a carriersecured to the spindle bank and depending therefrom. The carrier isprovided with an upwardly facing supporting member spaced below thespindle bank and on which a corresponding supporting member extendingfrom a hearing housing holder rests. lnterposed and secured to each ofthe supporting members is a resilient body permitting the bearinghousing to oscillate with respect to the spindle bank.

In the preferred form of the invention both the carrier and the holderare adjustably secured to the spindle bank and the bearing housingrespectively, permitting the bearing housing and spindle thereon to beaxially adjustable. In the specific form shown as the preferredembodiment, the carrier comprises a sleeve having a flanged end and theholder comprises a collar having a correspondingly mated end.

In the preferred form the resilient body is rubber. It is greater in itsradial dimension to provide greater spring action radially of thebearing housing. It may also be provided with means for limiting axialresiliency.

Full details of the present invention are set forth in the followingdisclosure.

BRIEF DESCRIPTION OF DRAWING The single FIGURE is a vertical sectionalview of a spindle bank and bearing housing mounting arrangementaccording to the present invention DESCRIPTION OF INVENTION In thedrawing a spindle bank 10 of a conventional spinning and/or twistingmachine is shown. The spinning and twisting machines are conventional innature and its details are therefore omitted in order to avoid a longrecital of well known structures. The spin dle bank 10 has a pluralityof recesses 12 (only one of which is shown) for receiving an associatedspindle and spindle bearing housing.

A spindle bearing housing is carried in and spaced from the walls of atubular sleeve 16 which has an outer thread on which two clamping nuts18 and 20 are secured. This carrier sleeve 16 extends axially throughthe recess 12 being spaced from the ends of the spindle bank wall and isheld securely to the spindle bank by arranging the clamping nut 18 toengage the upper surface and the clamping nut 20 to engage the lowersurface of the spindle bank.

The lower end of the tubular sleeve 16, which is well below the lowersurface of the spindle bank 10, as viewed in the drawing, is bentoutwardly into a circular flange 22 which is preferably perpendicular,or nearly so to the axis of the sleeve. An annular spring body 24 ofrubber, or other elastomic yieldably resilient material is vulcanized,or otherwise adhered to the upper surface of the circular flange 22. Theradial dimension of the spring body 24 is preferably a multiple of itsaxial dimension. Preferably the spring body is made of synthetic rubbermaterial and may have inert filler content.

In order to arrange the spindle bearing housing axially within thesleeve R6, the spindle bearing housing is provided with a holdercomprising bushing 26 which is preferably adjustable in an axialdirection and which is capable of being fixed in the adjusted position.To this end the spindle bearing housing and the bushing are matinglythreaded. The bushing 26 supports on its outer surface a sheet metalcollar having an inwardiy directed circular flange 28 adapted to seatover the spring body 24 and a cylindrical depending skirt 30. The skirt30 is secured in a non-releasable manner to the bushing 26 by matingdetent means comprising one or more annular grooves 32 in the bushing 26and cooperating corresponding beads or folds 34 formed in the skirt 30.The inwardly directed flange 28 is vulcanized or otherwise fixed to thespring body 24 in the same manner as the body 24 is adhered to theflange 22.

The spring body 24, arranged on the stationary outer flange 22, incooperation with the sheet metal collar and the holding bushing 26together with the spindle bearing housing 14 constitute an oscillatingsystem for a spindle arranged within the spindle bank recess 12, inwhich a greater amplitude in the radial direction, relative to thespindle bearing housing, than in an axial direction, is insured due tothe effective forces during spindle rotation. With relatively heavy yarnspools it may be necessary, however, to arrange one or more insertswithin the spring body 24 in order to provide boundary zones whichreduce the elasticity of the spring body in the axial direction without,however, reducing elasticity in the radial direction. Such inserts maybe annular disks or plastic filler panels incorporated in the vulcanizedbody, or other well known measures.

By the arrangement of the spring body 24 below the spindle bank 10, andby the axially adjustable arrangement of both the sleeve 16 as well asthe spindle bearing housing 14 in the carrier bushing 26, it is possibletherefore to adjust the level or height of the spindle, and/or spindlebearing housing, with respect to the spindle bank to obtain the mostefficient height and mounting level for the type of machine to which thepresent invention is applied. Secondly, the present invention permitsthe spindle bearing to be placed in a position where a spindle brake(such as a jaw type brake) may be mounted on the spindle bank, in amanner entirely independent from the bearing arrangement. Thus the brakedoes not have to be associated with the oscillating bearing housing andis unetl'ected by any movement or vibration. Meanwhile, the center ofgravity of the bearing housing is maintained well below the rotatingspindle mounted on it. The problems of assembly are therefore,significantly reduced, and harmful effects to associated mechanisms areavoided.

It will be noted that the resilient spring body is compressed betweenthe supporting sleeve and the holder bushing from the spindle bearinghousing. Consequently, a greater elasticity in the radial direction thanin the axial direction is assured. By chosing the dimensions of theresilient spring body the rate of resiliency in the opposed directionscan be predetermined.

The resilient body may be of different shapes as for example, it may beformed as a separable independent unit whose upper and lower surfacesare provided with flanges enabling the unit to be fastened by bolt orscrews to the supporting flange of the sleeve and the inwardly directedflange of the collar. The resilient body may be laminar, being formed oftwo or more layers of rubber or similar material. As noted earlier.inserts of non-elastic filler material may be used to create houndaryzones limiting or predefining the resilient characteristics of thespring body in the axial direction. Pressure plates, pre-stressing orpre-compressing the spring body may also be used. Even with the use ofsuch limiting features the resilient characteristics of the spring bodydo not change in the radial direction.

The holder bushing and the supporting carrier sleeve may also take manyforms. For example, the supporting sleeve may be formed by a loop or arefastened to the underside of the spindle bank and secured to the spindlehousing. The collar may be formed by three or four arms, rather than acircular body as shown, each arm having an inwardly projecting portionvulcanized to the spring body and a depending member secured to thespindle bearing housing holder bushing. The preferred form of collar andbearing holder bushing, shown in the drawing, is particularlyadvantageous because of its simplicity and because of its ability to besecurely adhered, by its inwardly directed flange, to the spring body.This preferred arrangement also permits the simple axial adjustment ofthe spindle bearing housing in the holder bushing.

An important advantage of the device, as shown, is the ability to makeaxial adjustment by either the threaded sleeve and the threaded bearinghousing. Such adjustment is simple, effective and permits modificationof the spindle level over a wide range.

It will be obvious that the numerous objects and advantages discussed donot exhaust the possibilities of the present invention. it will beappreciated, however, that through the simple mechanism of the presentinvention there is provided an improved bearing support arrangementenabling the spindle to effectively oscillate, shift its geometric axis,its center of gravity as well as pivot its axis or rotation and centerof gravity while insuring quiet and smooth operation.

As noted many modifications can be made. The present invention isillustrative only and should therefore not be taken in a limiting sense.

What is claimed: a

1. Apparatus resiliently mounting a spindle bearing housing radiallyspaced within the recess of a spindle bank, comprising a tubular sleevesecured within the recess of said spindle bank and axially dependingtherefrom, said sleeve having a radially outward extending flangeforming an upwardly facing supporting surface spaced below the spindlebank, a holder for said bearing housing having an inwardly directedflange forming a downwardly facing supporting surface means forretaining the bearing housing axially within said holder and spaced fromsaid sleeve and a resilient body interposed between and secured to saidsupporting surfaces to permit said housing to oscillate with respect tosaid spindle bank.

2. The apparatus according to claim 1, wherein said resilient body has aradial dimension greater than an axial dimension.

3. The apparatus according to claim 2, wherein said resilient bodycomprising a rubber spring vulcanized to the surfaces of the cooperatingsupporting members.

4. The apparatus according to claim 1, wherein the bearing housingholder comprises a collar secured to a bushing secured to said bearinghousing, said collar extending axially of said bearing and having aninwardly directed flange adapted to be secured to the resilient body.

5. The apparatus according to claim 4, wherein said bushing is securedto said bearing housing in axially adjustable relationship.

6. The apparatus according to claim 5, wherein said collar comprises anannular sheet metal member and said collar and bushing are provided withcooperating detent means for fixedly securing the two together.

7. The apparatus according to claim 5, wherein said bearing housing andsaid bearing housing holder are correspondingly threaded.

8. The apparatus according to claim I, wherein said tubular sleeve isprovided with external threads and includes a pair of clamping nuts, oneof which is arranged above and the other of which is arranged below thespindle bank, whereby said sleeve may be axially adjusted.

9. The apparatus according to claim 1, wherein said resilient body isprovided with means for limiting the axial resiliency thereof.

# i i 1' t

1. Apparatus resiliently mounting a spindle bearing housing radiallyspaced within the recess of a spindle bank, comprising a tubular sleevesecured within the recess of said spindle bank and axially dependingtherefrom, said sleeve having a radially outward extending flangeforming an upwardly facing supporting surface spaced below the spindlebank, a holder for said bearing housing having an inwardly directedflange forming a downwardly facing supporting surface means forretaining the bearing housing axially within said holder and spaced fromsaid sleeve and a resilient body interposed between and secured to saidsupporting surfaces to permit said housing to oscillate with respect tosaid spindle bank.
 2. The apparatus according to claim 1, wherein saidresilient body has a radial dimension greater than an axial dimension.3. The apparatus according to claim 2, wherein said resilient bodycomprising a rubber spring vulcanized to the surfaces of the cooperatingsupporting members.
 4. The apparatus according to claim 1, wherein thebearing housing holder comprises a collar secured to a bushing securedto said bearing housing, said collar extending axially of said bearingand having an inwardly directed flange adapted to be secured to theresilient body.
 5. The apparatus according to claim 4, wherein saidbushing is secured to said bearing housing in axially adjustablerelationship.
 6. The apparatus according to claim 5, wherein said collarcomprises an annular sheet metal member and said collar and bushing areprovided with cooperating detent means for fixedly securing the twotogether.
 7. The apparatus according to claim 5, wherein said bearinghousing and said bearing housing holder are correspondingly threaded. 8.The apparatus according to claim 1, wherein said tubular sleeve isprovided with external threads and includes a pair of clamping nuts, oneof which is arranged above and the other of which is arranged below thespindle bank, whereby said sleeve may be axially adjusted.
 9. Theapparatus according to claim 1, wherein said resilient body is providedwith means for limiting the axial resiliency thereof.